Starship Asterisk*

Earthquake at the Observatory Copyright: Zachary Slepian / Dustin Lang / Legacy Surveys / NOAO / AURA / NSF 769981_quake.jpg decam-earthquake-2.jpg An image of the sky in the constellation of Pegasus taken on Sept 6, 2018 during a 5.8 magnitude earthquake in Chile. The earthquake struck during the ...

Actually, is it just me, (or just a JPEG artifact), but I think I *can* see one brighter-gray pixel to the right and down one pixel from the Earth center. That's about the right distance and orientation for the Moon.

If you blink between the annotated and un-annotated versions, http://broiler.astrometry.net/~dstn/temp/17171.jpg http://broiler.astrometry.net/~dstn/temp/17171-ann.jpg you can see that at the point the image was taken, the moon was about 10 days away from being in-line with Earth as seen from Saturn...

emc wrote:I appreciate the Earth and Moon trails. Now I can better imagine that I'm there watching home fly distantly by!

I like that you can see the orbit of the Moon over the two-month period; it also gives you an idea of how far apart Earth and the Moon *could* have looked.

--dstn

No error, this is definitely the one from near Saturn. You can see from the annotation: that it's taken from Saturn; otherwise Earth would appear in front of a different backdrop of stars.

And here's the annotated version of the Messenger shot: http://broiler.astrometry.net/~dstn/temp/ann-mess.jpg http://broiler.astrometry.net/~dstn/temp/ann-mess.jpg I was surprised this worked, since the stars are pretty faint, but bringing up the brightness/contrast helped me see them (the code had ...

Maybe it's rude to double-post, but this is actually about today's APOD, not yesterday's: An annotated version of the Cassini shot! http://broiler.astrometry.net/~dstn/temp/17171-ann.jpg Details at old post http://asterisk.apod.com/viewtopic.php?f=9&t=31792&p=203761#p203756 cheers, dustin

Long time APOD fan, first time poster. Here is my annotated version of the wide-field image version of today's APOD: http://broiler.astrometry.net/~dstn/temp/17171-ann.jpg http://broiler.astrometry.net/~dstn/temp/17171-ann.jpg (copy of the original wide-field image is here: http://broiler.astrometry...